SOLUTION: Air Travel. Two airplanes start at the same time and fly
toward each other from points 1000 km apart at rates of
420 km/h and 330 km/h . After how many hours will
they meet?
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: Air Travel. Two airplanes start at the same time and fly
toward each other from points 1000 km apart at rates of
420 km/h and 330 km/h . After how many hours will
they meet?
Log On
Question 432608: Air Travel. Two airplanes start at the same time and fly
toward each other from points 1000 km apart at rates of
420 km/h and 330 km/h . After how many hours will
they meet? Answer by jorel1380(3719) (Show Source):
You can put this solution on YOUR website! If two planes start at the same time and fly toward each other, then their respective velocities can be added to each other. Since they are going 420 and 330, respectively, then:
--------------------
--------------------
(420 km/h + 330 km/h)x hrs.=1000km
750 km/h * x hrs.=1000km
x=1000/750 hrs.
""=4/3 hrs
Which equals 1hr. 20min. before they crash into each other.
